Tecoma plant named ‘Sunhorteki’

ABSTRACT

A new and distinct cultivar of  Tecoma  plant named ‘Sunhorteki’, characterized by its semi-upright plant habit; vigorous growth habit; early and freely flowering habit; flowering under high temperature conditions; bright yellow-colored flowers; and low temperature tolerance.

Botanical designation: Tecoma hybrida.

Cultivar denomination: ‘SUNHORTEKI’.

CROSS REFERENCED TO CLOSELY-RELATED APPLICATIONS

Title: Tecoma Plant Named ‘Sunhorteaka’

Applicants: Kenichi Arisumi & Yasuo Kobayashi

Filed: Concurrently with this application having Plant patent application Ser. No. 14/544,309

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Tecoma plant, botanically known as Tecoma hybrida and hereinafter referred to by the name ‘Sunhorteki’.

The new Tecoma plant is a product of a planned breeding program conducted by the Inventors in Chikushino-shi, Fukuoka, Japan. The objective of the breeding program is to create new early and freely flowering Tecoma plants with low temperature tolerance.

The new Tecoma plant originated from a cross-pollination in Chikushino-shi, Fukuoka, Japan in May, 2009 of a proprietary selection of Tecoma hybrida identified as code name Horteco-1, not patented, as the female, or seed parent with a proprietary selection of Tecoma hybrida identified as code name Horteco-2, not patented, as the male, or pollen, parent. The new Tecoma plant was discovered and selected by the Inventors as a single flowering plant from within the progeny of the stated cross-pollination in a controlled greenhouse environment in Chikushino-shi, Fukuoka, Japan in July, 2009.

Asexual reproduction of the new Tecoma plant by cuttings in Chikushino-shi, Fukuoka, Japan since August, 2009 has shown that the unique features of this new Tecoma plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Tecoma have not been observed under all possible combinations of environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Sunhorteki’. These characteristics in combination distinguish ‘Sunhorteki’ as a new and distinct Tecoma plant:

-   -   1. Semi-upright plant habit.     -   2. Vigorous growth habit.     -   3. Early and freely flowering habit.     -   4. Flowering under high temperature conditions.     -   5. Bright yellow-colored flowers.     -   6. Low temperature tolerant.

Plants of the new Tecoma can be compared to plants of the female parent selection. Plants of the new Tecoma differ primarily from plants of the female parent selection in the following characteristics:

-   -   1. Plants of the new Tecoma flower earlier than plants of the         female parent selection.     -   2. Plants of the new Tecoma flower under high temperature         conditions whereas plants of the female parent selection do not         typically flower under high temperature conditions.     -   3. Plants of the new Tecoma are more low temperature-tolerant         than plants of the female parent selection.

Plants of the new Tecoma can be compared to plants of the male parent selection. Plants of the new Tecoma differ primarily from plants of the male parent selection in the following characteristics:

-   -   1. Plants of the new Tecoma and the male parent selection differ         in flower color as plants of the male parent selection have         reddish yellow-colored flowers.     -   2. Plants of the new Tecoma flower under high temperature         conditions whereas plants of the male parent selection do not         typically flower under high temperature conditions.     -   3. Plants of the new Tecoma are more low temperature-tolerant         than plants of the male parent selection.

Plants of the new Tecoma can be compared to plants of Tecoma hybrida ‘Sunhorteaka’, disclosed in a U.S. Plant patent application Ser. No. 14/544,309. Plants of the new Tecoma differ primarily from plants of ‘Sunhorteaka’ in flower color as plants of ‘Sunhorteaka’ have orange red, vivid orange and vivid reddish yellow-colored flowers.

Plants of the new Tecoma can also be compared to plants of the Tecoma ‘Mayan Gold’, not patented. In side-by-side comparisons conducted in Higashiomi, Shiga, Japan, plants of the new Tecoma differed from plants of ‘Mayan Gold’ in the following characteristics:

-   -   1. Plants of the new Tecoma were smaller than plants of ‘Mayan         Gold’.     -   2. Plants of the new Tecoma had larger leaves than plants of         ‘Mayan Gold’.     -   3 Plants of the new Tecoma were more freely flowering than         plants of ‘Mayan Gold’.     -   4. Plants of the new Tecoma had smaller flowers than plants of         ‘Mayan Gold’.     -   5. Plants of the new Tecoma and ‘Mayan Gold’ differed in flower         color as plants of ‘Mayan Gold’ had bright yellow-colored         flowers.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Tecoma plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the actual colors of the new Tecoma plant.

The photograph at the top of the sheet comprises a side perspective view of a typical flowering plant of ‘Sunhorteki’ grown in a container.

The photograph at the bottom of the sheet is a close-up view of a typical inflorescence of ‘Sunhorteki’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations, measurements and values describe plants grown during the late spring in 15-cm containers in an outdoor nursery in Higashiomi, Shiga, Japan and under cultural practices typical of commercial Tecoma production. During the production of the plants, day temperatures averaged 28° C. and night temperatures averaged 23° C. Plants were ten months old when the photographs and detailed description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2007 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Tecoma hybrida ‘Sunhorteki’. -   Parentage:     -   -   Female, or seed, parent.—Proprietary selection of Tecoma             hybrida identified as code name Horteco-1, not patented.         -   Male, or pollen, parent.—Proprietary selection of Tecoma             hybrida identified as code name Horteco-2, not patented. -   Propagation:     -   -   Type.—By vegetative cuttings.         -   Time to initiate roots, summer.—About 20 days at             temperatures about 25° C. to 30° C.         -   Time to initiate roots, winter.—About 35 days at             temperatures about 18° C. to 23° C.         -   Time to produce a rooted young plant, summer.—After root             initiation, about 15 days at temperatures about 25° C. to             30° C.         -   Time to produce a rooted young plant, winter.—After root             initiation, about 25 days at temperatures about 15° C. to             20° C.         -   Root description.—Fibrous; white in color.         -   Rooting habit.—Freely branching. -   Plant description:     -   -   Plant and growth habit.—Upright to somewhat outward plant             habit; vigorous growth habit.         -   Plant height.—About 36.2 cm.         -   Plant width (or plant spread).—About 32.8 cm.         -   Lateral branch description.—Length: About 25 cm. Diameter:             About 4.2 mm. Internode length: About 4.2 cm. Strength:             Strong. Texture: Smooth, glabrous. Color, developing: Close             to 144B. Color, woody: Close to N199A. -   Leaf description:     -   -   Arrangement.—Opposite; pinnately compound with three or five             leaflets per leaf.         -   Leaf length.—About 14.8 cm.         -   Leaf width.—About 9.3 cm.         -   Terminal leaflet length.—About 7.6 cm to 10.3 cm.         -   Terminal leaflet width.—About 2.8 cm to 3.7 cm.         -   Lateral leaflet length.—About 6.9 cm to 8.25 cm.         -   Lateral leaflet width.—About 3 cm to 3.6 cm.         -   Leaflet shape.—Elliptic to narrowly elliptic.         -   Leaflet apex.—Acuminate.         -   Leaflet base.—Cuneate.         -   Leaflet margin.—Shallowly serrate.         -   Leaflet texture, upper and lower surfaces.—Smooth, glabrous.         -   Leaflet venation pattern.—Pinnate, reticulate.         -   Leaflet color.—Developing leaflets, upper surface: Close to             144A. Developing leaflets, lower surface: Close to 144B.             Fully expanded leaflets, upper surface: Close to 137B;             venation, close to N144D. Fully expanded leaflets, lower             surface: Close to 138A; venation, close to 145C.         -   Leaf petioles.—Length: About 4.1 mm. Diameter: About 1.2 mm.             Texture, upper and lower surfaces: Smooth, glabrous. Color,             upper and lower surfaces: Close to 144B.         -   Terminal leaflet petioles.—Length: About 1.6 mm. Diameter:             About 1.4 mm. Texture, upper and lower surfaces: Smooth,             glabrous. Color, upper and lower surfaces: Close to 144B.         -   Lateral leaflet petioles.—Length: About 2.5 mm. Diameter:             About 1.3 mm. Texture, upper and lower surfaces: Smooth,             glabrous. Color, upper and lower surfaces: Close to 144B. -   Flower description:     -   -   Flower type and habit.—Single salverform flowers arranged in             terminal panicles; flowers face upright to outwardly; freely             flowering habit with about 15 flowers per inflorescence and             about two to three inflorescences developing per plant.         -   Natural flowering season.—Early flowering habit, plants             flower in mid-May and towards the end of September in Japan;             plants begin flowering about six to nine weeks after             planting.         -   Flower longevity.—Flowers last about two to three days on             the plant; flowers not persistent.         -   Fragrance.—Slightly fragrant, pleasant.         -   Inflorescence height.—About 8.9 cm.         -   Inflorescence diameter.—About 9.3 cm.         -   Flower buds.—Height: About 3.7 cm. Diameter: About 1 cm.             Shape: Club-shaped. Color: Towards the apex, close to 34C;             towards the base, close to 13B.         -   Flowers.—Appearance: Salverform; flared trumpet, corolla             fused and five-parted. Diameter: About 3.9 cm. Depth             (length): About 3.8 cm. Throat diameter: About 1.1 cm. Tube             length: About 4.2 cm. Tube diameter: About 1 cm.         -   Corolla.—Quantity and arrangement: Five petals arranged in a             single whorl and fused towards the base into an elongated             tube. Petal lobe shape: Orbicular. Petal lobe apex: Rounded;             occasionally emarginate. Petal lobe margin: Entire. Petal             lobe texture, upper and lower surfaces: Smooth, glabrous.             Throat texture: Smooth, slightly pubescent. Tube texture:             Smooth, glabrous. Color: Petal lobe, when opening, upper             surface: Close to 12A blushed with close to 35A. Petal lobe,             when opening, lower surface: Close to 12B blushed with close             to 35A. Petal lobe, fully opened, upper surface: Close to             9A. Petal lobe, fully opened, lower surface: Close to 9B.             Throat: Close to 12A; thin stripes, close to 33B. Tube:             Close to 12B blushed with close to 35A.         -   Calyx.—Quantity and arrangement: Five sepals arranged in a             single whorl, fused at the base. Sepal length: About 1.6 mm.             Sepal width: About 1.2 mm. Sepal shape: Triangular. Sepal             apex: Acute. Sepal margin: Entire. Sepal texture, upper and             lower surfaces: Smooth, glabrous. Sepal color: When             developing and fully opened, upper surface: Close to 144B             tinted with close to 173A. When developing and fully opened,             lower surface: Close to 144C.         -   Peduncles.—Length: About 3.7 cm. Diameter: About 1.6 mm.             Texture: Smooth, glabrous. Aspect: Upright to somewhat             outwardly. Color: Close to 144B.         -   Pedicels.—Length: About 3.9 mm. Diameter: About 0.9 mm.             Texture: Smooth, glabrous. Aspect: Semi-upright. Color:             Close to 144B.         -   Reproductive organs.—Stamens: Quantity per flower: Typically             four. Stamen length: About 2 cm. Anther shape: Variable.             Anther color: Close to 10C. Filament color: Close to 1D.             Pollen amount: None observed. Pistils: Quantity: Typically             one. Pistil length: About 4 cm. Style color: Close to 145D.             Stigma shape: Spatulate, bi-parted. Stigma color: Close to             145C. Ovary color: Close to 144B. Seeds and fruits: Seed and             fruit production have not been observed on plants of the new             Tecoma. -   Disease & pest resistance: Plants of the new Tecoma have not been     noted to be resistant to pathogens and pests common to Tecoma     plants. -   Garden performance: Plants of the new Tecoma have been observed to     tolerate wind, rain and temperatures ranging from about −5° C. to     about 35° C. 

It is claimed:
 1. A new and distinct Tecoma plant named ‘Sunhorteki’ as illustrated and described. 